预应力型钢混凝土框架结构竖向反复荷载作用下抗震性能试验研究
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摘要
通过对1榀柱中内置型钢和1榀梁柱均内置型钢的预应力型钢混凝土框架的竖向反复荷载试验,研究预应力型钢混凝土框架的破坏机制、滞回特性、延性、刚度和耗能等性能。结果表明:预应力型钢混凝土框架梁是梁铰破坏机制,极限状态时"拱效应"提高了框架梁的承载能力;预应力型钢混凝土框架梁滞回曲线饱满,变形恢复能力小于普通预应力混凝土框架梁;预应力型钢混凝土框架梁位移延性系数均值为4.8,普通预应力混凝土框架梁的为4.18,均有较好的延性;等效黏滞阻尼系数介于0.258～0.323之间,说明2个试件破坏时截面具有良好的耗能能力;参数分析表明,试件延性系数受含钢率影响不大,随内置型钢截面高度与梁截面高度比值增大而增大。
A study was conducted on the vertical seismic behaviors of one prestressed steel reinforced concrete frame with steel in columns only and one frame with steel in beams and columns.The seismic behavior of prestressed steel reinforced concrete frames,such as the failure patterns,hysteresis loops,displacement ductility,stiffness and energy dissipation was studied.It is shown that the failure patterns are beam hinge failure and arching action can enhance the ultimate load of the frame beam.The hysteretic loops of the prestressed steel reinforced concrete frame beam is plumer and the deformation recovery is less than that of the frame beam without steel.The average displacement ductility coefficient of prestressed steel reinforced concrete frame beam is 4.8 and prestressed reinforced concrete frame beam is 4.18,indicating that two frame beams have good ductility.The equivalent viscous damping coefficient is about 0.258 to 0.323,indicating that two frame beams have good energy dissipation capacity.The ductility factor is not significantly affected by the steel ratio,but it increases as the ratio of depth of steel to depth of the beam increases.
A study was conducted on the vertical seismic behaviors of one prestressed steel reinforced concrete frame with steel in columns only and one frame with steel in beams and columns.The seismic behavior of prestressed steel reinforced concrete frames,such as the failure patterns,hysteresis loops,displacement ductility,stiffness and energy dissipation was studied.It is shown that the failure patterns are beam hinge failure and arching action can enhance the ultimate load of the frame beam.The hysteretic loops of the prestressed steel reinforced concrete frame beam is plumer and the deformation recovery is less than that of the frame beam without steel.The average displacement ductility coefficient of prestressed steel reinforced concrete frame beam is 4.8 and prestressed reinforced concrete frame beam is 4.18,indicating that two frame beams have good ductility.The equivalent viscous damping coefficient is about 0.258 to 0.323,indicating that two frame beams have good energy dissipation capacity.The ductility factor is not significantly affected by the steel ratio,but it increases as the ratio of depth of steel to depth of the beam increases.
引文
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[6]傅传国,李玉莹,梁书亭.预应力型钢混凝土简支梁受弯性能试验研究[J].建筑结构学报,2007,28(3):62-73.(FU Chuanguo,LI Yuying,LIANG Shuting.Experimental study on simply supported prestressedsteel reinforced concrete beams[J].Journal of BuildingStructures,2007,28(3):62-73.(in Chinese))
[7]薛伟辰,杨枫,苏旭霖,等.预应力钢骨混凝土梁低周反复荷载试验研究[J].哈尔滨工业大学学报,2007,39(8):1185-1190.(XUE Weichen,YANGFeng,SU Xulin,et al.Experimental studies onprestressed steel reinforced concrete beams under lowreversed cyclic loading[J].Journal of Harbin Instituteof Technology,2007,39(8):1185-1190.(inChinese))
[8]傅传国,李玉莹,孙晓波,等.预应力及非预应力型钢混凝土框架受力及抗震性能试验研究[J].建筑结构学报,2010,31(8):15-21.(FU Chuanguo,LIYuying,SUN Xiaobo,et al.Experimental study onseismic performance of prestressed and non-prestressedsteel reinforced concrete frames[J].Journal of BuildingStructures,2010,31(8):15-21.(in Chinese))
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[12]柳炳康,田井锋.低周反复荷载下预压装配式PC框架延性性能和耗能能力[J].建筑结构学报,2007,28(3):71-84.(LIU Bingkang,TIAN Jingfeng.Behavior of ductility and energry dissipation ofprestressed precast concrete frame under low-cyclicreversed loading[J].Journal of Building Structures,2007,28(3):71-84.(in Chinese))
[13]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2006:336-337.(Guo Zhenhai,Shi Xudong.Reinforced concrete theory and analysis[M].Beijing:Tsinghua University Press,2006:336-337.(in Chinese))
[14]苏幼坡,王兴国,宋晓胜,等.钢筋混凝土框架梁拱效应的试验研究[J].西安建筑科技大学学报,2009,41(4):477-484.(SU Youpo,WANG Xinguo,SONG Xiaosheng,et al.Experimental investigation onthe arching action in reinforced concrete frame-beams[J].Journal of Xi’an University of Architecture&Technology,2009,41(4):477-484.(in Chinese))
[15]GB50152—1992混凝土结构试验方法标准[S].北京:中国建筑工业出版社,1992.(GB50152—1992Standard methods for testing of concrete structures[S].Beijing:China Architecture&Building Press,1992.(inChinese))
[16]JGJ101—1996建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.(JGJ101—1996Specification of testing methods for earthquake resistantbuilding[S].Beijing:China Architecture&BuildingPress,1997.(in Chinese))
[17]GB50010—2010混凝土结构设计规范[S].北京:中国建筑工业出版社,2010.(GB50010—2010Code for design of concrete structures[S].Beijing:China Architecture&Building Press,2010.(inChinese))
[18]Lee Jong Jae,Fenves G L.Plastic-damage model forcyclic loading of concrete structures[J].Journal ofEngineering Mechanics,1998,124(8):892-900.
[19]Hu Hsuan-The,Lin Fu-Ming,Jan Yih-Yuan.Nonlinear finite element analysis of reinforced concretebeams strengthened by fiber-reinforced plastics[J].Composite Structures,2004,63(2):271-281.
[20]雷拓,钱江,刘成清.混凝土损伤塑性模型应用研究[J].结构工程师,2008,24(2):22-27.(LEI Tuo,QIAN Jiang,LIU Chengqing.Application of damagedplasticity model for concrete[J].Structural Engineers,2008,24(2):22-27.(in Chinese))
[2]熊学玉,高峰,李亚明.预应力型钢混凝土框架梁试验研究及抗裂度分析[J].工业建筑,2011,41(12):16-19.(Xiong Xueyu,Gao Feng,Li Yaming.Experimental investigation and crack resistance analysison large scale prestressed steel reinforced concreteframe[J].Industrial Construction,2011,41(12):16-19.(in Chinese))
[3]熊学玉,高峰,李亚明.预应力型钢混凝土框架梁裂缝控制试验分析及计算[J].工业建筑,2011,41(12):20-23.(Xiong Xueyu,Gao Feng,Li Yaming.Experiment and calculation of crack control onprestressed steel reinforced concrete frame beams[J].Industrial Construction,2011,41(12):20-23.(inChinese))
[4]熊学玉,高峰,李亚明.预应力型钢混凝土框架梁正截面承载力试验及计算[J].工业建筑,2011,41(12):24-30.(Xiong Xueyu,Gao Feng,Li Yaming.Experiment and calculation of bending capacity ofprestressed steel reinforced concrete frame beams[J].Industrial Construction,2011,41(12):24-30.(inChinese))
[5]王钧,邬丹,郑文忠.预应力H型钢混凝土简支梁正截面受力性能试验[J].哈尔滨工业大学学报,2009,41(6):22-27.(WANG Jun,WU Dan,ZHENGWenzhong.Experimental research on flexuralmechanical behavior of simple prestressed H-steelreinforced concrete beam[J].Journal of HarbinInstitute of Technology,2009,41(6):22-27.(inChinese))
[6]傅传国,李玉莹,梁书亭.预应力型钢混凝土简支梁受弯性能试验研究[J].建筑结构学报,2007,28(3):62-73.(FU Chuanguo,LI Yuying,LIANG Shuting.Experimental study on simply supported prestressedsteel reinforced concrete beams[J].Journal of BuildingStructures,2007,28(3):62-73.(in Chinese))
[7]薛伟辰,杨枫,苏旭霖,等.预应力钢骨混凝土梁低周反复荷载试验研究[J].哈尔滨工业大学学报,2007,39(8):1185-1190.(XUE Weichen,YANGFeng,SU Xulin,et al.Experimental studies onprestressed steel reinforced concrete beams under lowreversed cyclic loading[J].Journal of Harbin Instituteof Technology,2007,39(8):1185-1190.(inChinese))
[8]傅传国,李玉莹,孙晓波,等.预应力及非预应力型钢混凝土框架受力及抗震性能试验研究[J].建筑结构学报,2010,31(8):15-21.(FU Chuanguo,LIYuying,SUN Xiaobo,et al.Experimental study onseismic performance of prestressed and non-prestressedsteel reinforced concrete frames[J].Journal of BuildingStructures,2010,31(8):15-21.(in Chinese))
[9]胡聿贤.地震工程学[M].北京:地震出版社,1988:250-262.
[10]钱培风.竖向地震力[J].地震工程与工程振动,1983,3(2):44-53.(QIAN Peifeng.Vertical seismicforce[J].Earthquake Engineering and EngineeringVibration,1983,3(2):44-53.(in Chinese))
[11]余志武,周朝阳,曹祖怀,等.竖向低周反复荷载作用下无粘结部分预应力混凝土框架结构的抗震性能试验研究[J].建筑结构学报,1997,18(3):38-46.(YU Zhiwu,ZHOU Chaoyang,CAO Zuhuai,et al.Behavior of unbonded partially prestressed concreteframes under vertically reversed cyclic loading[J].Journal of Building Structures,1997,18(3):38-46.(in Chinese))
[12]柳炳康,田井锋.低周反复荷载下预压装配式PC框架延性性能和耗能能力[J].建筑结构学报,2007,28(3):71-84.(LIU Bingkang,TIAN Jingfeng.Behavior of ductility and energry dissipation ofprestressed precast concrete frame under low-cyclicreversed loading[J].Journal of Building Structures,2007,28(3):71-84.(in Chinese))
[13]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2006:336-337.(Guo Zhenhai,Shi Xudong.Reinforced concrete theory and analysis[M].Beijing:Tsinghua University Press,2006:336-337.(in Chinese))
[14]苏幼坡,王兴国,宋晓胜,等.钢筋混凝土框架梁拱效应的试验研究[J].西安建筑科技大学学报,2009,41(4):477-484.(SU Youpo,WANG Xinguo,SONG Xiaosheng,et al.Experimental investigation onthe arching action in reinforced concrete frame-beams[J].Journal of Xi’an University of Architecture&Technology,2009,41(4):477-484.(in Chinese))
[15]GB50152—1992混凝土结构试验方法标准[S].北京:中国建筑工业出版社,1992.(GB50152—1992Standard methods for testing of concrete structures[S].Beijing:China Architecture&Building Press,1992.(inChinese))
[16]JGJ101—1996建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.(JGJ101—1996Specification of testing methods for earthquake resistantbuilding[S].Beijing:China Architecture&BuildingPress,1997.(in Chinese))
[17]GB50010—2010混凝土结构设计规范[S].北京:中国建筑工业出版社,2010.(GB50010—2010Code for design of concrete structures[S].Beijing:China Architecture&Building Press,2010.(inChinese))
[18]Lee Jong Jae,Fenves G L.Plastic-damage model forcyclic loading of concrete structures[J].Journal ofEngineering Mechanics,1998,124(8):892-900.
[19]Hu Hsuan-The,Lin Fu-Ming,Jan Yih-Yuan.Nonlinear finite element analysis of reinforced concretebeams strengthened by fiber-reinforced plastics[J].Composite Structures,2004,63(2):271-281.
[20]雷拓,钱江,刘成清.混凝土损伤塑性模型应用研究[J].结构工程师,2008,24(2):22-27.(LEI Tuo,QIAN Jiang,LIU Chengqing.Application of damagedplasticity model for concrete[J].Structural Engineers,2008,24(2):22-27.(in Chinese))
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